Fan Shroud Design Explanation?  

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walter.c2
(@walter-c2)
New Member

I am at a loss as to why the fan shroud design blows the majority of the air on the heat block on my mk3s?

Shouldn't the airflow be concentrated on the plastic below? When the fan is on, the controller has a harder time controlling temperature. Especially when you are working with high heat filament. 

Posted : 01/09/2019 1:44 pm
joan.t
(@joantabb)
Veteran Member Moderator

do you have  time to design a better shroud?   there seems to be a lack of alternatives for the mk3S

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 01/09/2019 6:34 pm
Tim
(@tim-m30)
Illustrious Member
Posted by: walter.c2

I am at a loss as to why the fan shroud design blows the majority of the air on the heat block on my mk3s?

Shouldn't the airflow be concentrated on the plastic below? When the fan is on, the controller has a harder time controlling temperature. Especially when you are working with high heat filament. 

Many just use a silicon sock to insulate the heater block.  Not the best solution, but an easy one to implement.

It is always wise to get more than one opinion......
Posted : 01/09/2019 6:48 pm
bobstro
(@bobstro)
Illustrious Member
Posted by: walter.c2

I am at a loss as to why the fan shroud design blows the majority of the air on the heat block on my mk3s?

Was your printer a pre-built or a kit? Depending on the position of other parts, there can be a lot of variation in how the fan is oriented. You might try loosening a few screws and seeing if you can get it angled better.

A silicone sock can definitely help.

My notes and disclaimers on 3D printing and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan...
Posted : 01/09/2019 9:28 pm
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